Overview
The SN74HC374NG4, produced by Texas Instruments, is an octal edge-triggered D-type flip-flop integrated circuit. This component features eight D-type flip-flops in a single package, making it highly suitable for various digital logic applications. The device is designed with 3-state outputs, which can drive highly capacitive or relatively low-impedance loads, and it includes an output-enable (OE) input to control the output states.
The SN74HC374NG4 operates over a wide voltage range of 2 V to 6 V, making it versatile for different system designs. It is particularly useful for implementing buffer registers, I/O ports, bidirectional bus drivers, and working registers.
Key Specifications
| Parameter | Unit | Min | Max | |
|---|---|---|---|---|
| VCC (Supply Voltage) | V | 2 | 5 | 6 |
| VIH (High-level Input Voltage) at VCC = 6 V | V | 4.2 | 4.2 | |
| VIL (Low-level Input Voltage) at VCC = 6 V | V | 1.8 | 1.8 | |
| ICC (Quiescent Current) at VCC = 6 V | µA | 80 | 160 | |
| tpd (Propagation Delay Time) at VCC = 6 V, CL = 50 pF | ns | 15 | 31 | 46 |
| fclock (Clock Frequency) at VCC = 6 V | MHz | 24 | 35 | |
| Operating Free-Air Temperature | °C | -40 | 85 | |
| Junction-to-Ambient Thermal Resistance (RθJA) for PDIP Package | °C/W | 84.6 |
Key Features
- Wide operating voltage range of 2 V to 6 V
- High-current 3-state true outputs can drive up to 15 LSTTL loads
- Eight D-type flip-flops in a single package
- Full parallel access for loading
- Low power consumption, with a maximum ICC of 80 µA at 6 V
- Typical propagation delay time (tpd) of 14 ns at 5 V
- ±6-mA output drive at 5 V
- Low input current of 1 µA maximum
Applications
The SN74HC374NG4 is particularly suitable for various digital logic applications, including:
- Implementing buffer registers
- I/O ports
- Bidirectional bus drivers
- Working registers
Q & A
- What is the operating voltage range of the SN74HC374NG4?
The operating voltage range is from 2 V to 6 V.
- How many D-type flip-flops are included in the SN74HC374NG4?
The device includes eight D-type flip-flops in a single package.
- What is the maximum ICC (quiescent current) at 6 V?
The maximum ICC is 160 µA at 6 V.
- What is the typical propagation delay time (tpd) at 5 V?
The typical propagation delay time is 14 ns at 5 V.
- What is the output drive capability at 5 V?
The output drive capability is ±6 mA at 5 V.
- What is the purpose of the output-enable (OE) input?
The OE input places the eight outputs in either a normal logic state or the high-impedance state.
- What are the typical applications of the SN74HC374NG4?
Typical applications include buffer registers, I/O ports, bidirectional bus drivers, and working registers.
- What is the junction-to-ambient thermal resistance for the PDIP package?
The junction-to-ambient thermal resistance for the PDIP package is 84.6 °C/W.
- What is the operating free-air temperature range?
The operating free-air temperature range is from -40°C to 85°C.
- How many LSTTL loads can the high-current 3-state true outputs drive?
The high-current 3-state true outputs can drive up to 15 LSTTL loads.
